Copying-paper roll.



No. 695,488. Patented Mar. 48, I902.

F. a. J. POST.

CUPYING PAPER ROLL.

(Application filed July 20, 1901.)

(No Model.)

" -m ww UNITED ST TES PATENT OFFICE.

FRIEDRICH GUSTAV'JULIUS POST, OF HAMBURG, GERMANY.

COPYING-PAPER ROLL.

SPECIFICATION forming part of Letters Patent No. 695,488, dated March 18, 1902.

Application filed July 20, 1901. Serial No. 69,077. (No model.) i

To all whom it may concern:

Be it known that I, FRIEDRICH GUSTAV J U- LIUS POST, a subject of the German Emperor, and a resident of Hamburg, in the German Empire, have invented certain new and useful Improvements in Copying-Paper Rolls, of which the following is a specification.

This invention relates to an improved arrangement of copying-paper for press-copying letters or other documents, and has for its object to obviate the objections existing in the various methods heretofore adopted 7 for this purpose.

It has been usual heretofore when copying letters orthe like upon copying-paper sheets to employ special sheets of blotting, tissue, oil, or wax sheets, which serve partly for damping the copying-sheets and partly to pre vent the writing running upon or passing through the copying-paper and onto the other documents. For this purpose a damping and protecting sheet is placed on one side of the copying-paper sheet and the document is placed upon the'other side thereof, and it is usual to pile a number of such assemblages of sheets together, so that they maybe placed simultaneously in the copying-press. With this method it is impossible to prevent some of the tissue sheets being excessively wetted, while others are insufficiently damped, so that some of the press-copies are faulty or al together illegible, while a considerable waste of time is entailed in piling the sheets one on the other, and it, moreover, often happens that some of the damping and the protecting sheets are forgotten altogether and not insorted.

Now the object of this invention is to obviate the above-mentioned objections or disadvantages by arranging aroll of copying-paper in the following manner: With the web of copying-paper there is simultaneously rolled up a damping and protecting web, and this latter may be rolled'upon the back of one or several copying papers or webs or between several. In this manner a roll is formed from which simultaneously the copying-paper,with its damping and protecting web,can be drawn oft. If desired, several copying-papers may be used with one damping and protecting paper, so as to enable several copies to be obtained at once.

In the accompanying drawings, Figure 1 is a cross-section of my improved copying-paper tions of the web of tissue-paper. In practice,

however, the winding is effected under pressure, so that the said convolutions rest closely one upon the other. I Y 1 Similar letters refer to similar parts throughout the several views. p

The moist paper-roll, having a damping or protecting web a between the paper-webs b b, may be placed upon a spindle c, which latter projects at each end, so forming trunnions 0, adapted to fit bearings in the side or end walls of a suitable casing d, provided with a cover f and an aperture e, through which the paper may be drawn off the roll, Figs. 1 and 2.

The copying operation is effected by pulling off the roll a sufficient length of copyingpaper I) b, with its damping and protecting paper a, to suit the size of the letter or other document 2' placed upon or beneath it and then cutting such piece 01f the roll. The same action is repeated until all the separate sheets of written matter are formed into a pile ready to be inserted into the copying-press.

Referring more particularly to Fig. 2, it will be seen that the dampening-pad a has on each side of it several copyingpapers I) and at each side a sheet 1' to be copied, so that when placed in a letter-press the ink from the original writing on i will pass through two or more webs of tissue-paper b between the sheet t and the dampening-web a, thereby producing simultaneously two or more copies of the same writing. 7

If desired, the copyi11g-paper,Witl1its dam ping and protecting web, may be withdrawn from the rolls, and, together with the writing, be passed through a pressing-roller, the requisite length being afterward cut oil. The protecting-paper a thus cut with the copyingpaper may, after being used for copying, be utilized for various other purposes.

The cutting of the papers from the roll may be effected by an appropriate shearing-knife or guillotine g g, while the sheets composed of the sheets of written matter 2' and the copying-web Z) b with protecting-web a are piled upon a supporting-board 71, Figs. 1 and 2.

The improved copying-paper roll, with inclosed damping and protecting paper, constitutes not only an advantageous and practical arrangement for the reason that it renders the careful placing together of the copyingsheets unnecessary, so that the latter is never forgotten, but more particularly for the reason that all the copying-paper, with its protecting-paper, is uniformly moistened and remains so for a long time, as the water thoroughly permeates the roll of paper, either through the'property of absortion possessed by the paper or by forming a vacuum, in which case the composite web of copying and dampening paper may be wound on a tubular perforated mandrel and immersed in a body of water and suction applied to form a partial vacuum therein, and thereby draw the water through the layers of tissue and the dampening and protecting pad orby applying pressure either severally or together. For example, the absorption of the paper may be utilized for moistening the roll by suspending the latter, with its trunnions 0, upon bearings l in a box 7.: partially filled with water, which gradually permeates the paper in the roll and moistens the same uniformly, Fig. 3.

The improved copying-paper roll forms a commercial article which combines the sheets of copying-paper and backin gs in such a manner as to be always ready for use in directly copying writing and the like.

Having fully described myinvention, what- I claim, and desire to secure by Letters Patcut, is-

1. A copying-pad comprising one or more webs of copying-paper and one or more webs of a moisture absorbent superposed as described and rolled into a roll, for the purpose set forth.

2. A copying-pad comprising one or more webs of copying-paper and one or more webs of a moisture absorbent superposed as described and wound into a roll on a carrier having journal-terminals projecting from either end of the roll of webbing for the purpose set forth.

3. A copying-pad comprising one or more webs of copying-paper and one or more webs of a moisture absorbent superposed as described and wound into a roll on a carrier having journals projecting from either end of the roll; in combination with a casing having journal-bearings for said terminals and aslot through which the pad is drawn, and a cutter arranged proximate to said slot for cutting up the pad into sections of any desired length, for the purpose set forth.

FRIEDRICH GUSTAV JULIUS IOSI.

Witnesses:

MAX KAEMPFF, E. Ii. L. Motmmvliowr. 

